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So I’ve decided to get the car tuned on E85 ethanol race fuel. It’s available a lot of fuel stations over here in Aus, and at the moment it’s $1.98 a litre which is cheaper than 98 unleaded. I should see about an extra 25-40bhp gain from using e85.
I ordered some Injector Dynamic ID1000X injectors which should help with the flow. These along with my grimspeed boost solenoid turned up today in the post.
I’ve been away for a few weeks but got back on the weekend so it was time to get stuck into the evo again.
I fitted the boost solenoid and fuel pump, then it was off to my mates shop so he could get the ecu wiring finished off and installed. Before that I had to fit the injectors and my mafless induction kit. Once I installed them he then put a base map on the car so I could drive it to my tuner.
Dropped the car off at the tuner and then quickly drained the fuel tank so I could fill it up with e85.
I put the car on the dyno before I went overseas and it made 242bhp at the wheels. Hopefully I make about 330bhp at the wheels after the tune. I’ll be happy with that considering the motor and turbo are stock.
So first evening on the dyno, first power run and at about 5500rpm the fuel pressure started dropping off, checked the fuel pump voltage and it was low. So I hardwired the pump to the battery and that fixed the issue.
Next power run we hit 295awhp but was getting a warning on the link management program to say the injectors were maxing out. I no for a fact that the injectors are more than capable of the power I want so it was down to the pump.
The Walbro 255 is good for about 500bhp on 98 but add in the extra 40% fuel being used due to e85 that brings the figure down to only 300bhp when using e85, so the pump was maxing out causing the injectors to max out.
So I swapped out the pump for an aeromotive stealth 340 pump. Due to the bigger pump creating more pressure I also got a turbo smart fuel pressure regulator and hoses to complete the setup.
With the Link G4X did you retain all the full functionality of the car with no other issues? Asking because back in the day I remember that people would run into stupid annoying issues such as Link expecting a square wave signal from the radiator fan and the OEM fan controller sending a sine wave signal back thus the fan would act weird and either always run or never run.
With the Link G4X did you retain all the full functionality of the car with no other issues? Asking because back in the day I remember that people would run into stupid annoying issues such as Link expecting a square wave signal from the radiator fan and the OEM fan controller sending a sine wave signal back thus the fan would act weird and either always run or never run.
Yeah as far as I no I’ve got all the oem functionality. The fans come on and off as they did before etc..
I wasn’t happy with the exposed relay in the back of the car for the fuel pump so I tidied that up. Also hard mounted the fuel pressure regulator properly. My engine bay is finally finished and I’m happy with how it looks.
I’ve got round 2 of the state sprint championships coming up next weekend, so got my new tyres fitted. I went with Yokohama AO50’s in medium compound. Also got my alignment done, my set up is:
Had round 2 of the state championships at the weekend and it was awesome. I finished P1 in my class and P6 outright of 150+ cars, I was also the fastest road car there.
The front felt a bit soft under braking and I was using all the travel in the front up to the bump stop, I’ve ordered some 13kg front springs so I’ll get them fitted when they arrive.
Also had a blast racing in the rain. Back on track again in 2 weeks for some more sprints.
